What is the water quality grade for Lake Nasworthy?

Lake Nasworthy in Tom Green County, Texas received a water quality grade of C (Fair). Water clarity: 1.8 ft visibility. Phosphorus: 30 µg/L. Chlorophyll-a (algae): 13.8 µg/L.

Is Lake Nasworthy safe to swim in?

Generally safe for swimming, moderate water quality. Lake Nasworthy has an overall water quality grade of C. Algae concentration (chlorophyll-a) is 13.8 µg/L. Always check local health department advisories before swimming.

Tom Green County, Texas

Lake Nasworthy

Grade CFair · 1.8 ft clarity

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Eutrophic

Lake Nasworthy is a productive, nutrient-rich eutrophic lake in Tom Green County, Texas. Water quality is graded C based on 2 sampling years through 2022. Compared to the 5 other monitored lakes in Tom Green County, Lake Nasworthy ranks #4 for water quality.

Source: EPA Water Quality Portal sampling records, Texas DNR, last sampled 2022-04-05. Grade methodology: LakeGrade methodology.

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Swimming Safety

Generally safe for swimming, moderate water quality

Water Quality Grade: C, Fair

Very murky, less than 1.8 ft of visibility. Phosphorus level: 30 µg/L. Chlorophyll-a: 13.8 µg/L. Trophic State Index: 59.

Metric	Value	Grade
Water Clarity (Secchi Depth)	1.8 ft	F
Phosphorus	30 µg/L	C
Chlorophyll-a (Algae)	13.8 µg/L	C
Trophic State Index (TSI)	59	Eutrophic

High nutrients, frequent algae, reduced clarity

Where to stay near Lake Nasworthy

Compare lakeside cabins, hotels, and vacation rentals near Lake Nasworthy in Tom Green County, Texas — live availability and prices for your trip. Switch the map to Satellite to see the lake and how close each stay is to the water.

Top-rated places to stay near Lake Nasworthy